package heap;

import java.util.Arrays;

/**
 * 参数传递
 */
public class T02_ParaTransfer {
    public static void main(String[] args) {
        int i = 1;
        String str = "hello";
        Integer num = 200;

        int[] arr = {1, 2, 3, 4, 5};
        MyData my = new MyData();

        change(i, str, num, arr, my);

        // arr my 变了
        System.out.println("i= " + i);
        System.out.println("str= " + str);
        System.out.println("num= " + num);
        System.out.println("arr= " + Arrays.toString(arr));
        System.out.println("my.a= " + my.a);
    }

    public static void change(int j, String s, Integer n, int[] a, MyData m) {
        j += 1;
        s += "world";
        n += 1;
        a[0] += 1;
        m.a += 1;
    }

    static class MyData {
        int a = 10;
    }
}
